Answer: Hi Sam, a new requirement (450.14) for the 2011 NEC requires a transformer disconnecting means to be located either in sight from the transformer or in a remote location. If located in a remote location, the disconnecting means must be lockable and the location must be field marked on the transformer.

50 ft

Question: Can the disconnect switches be locked in the closed (on) position? Response: There is no provision in the OSHA regulations that prohibits locking the disconnecting means in the closed (on) position. OSHA requirements are set by statute, standards, and regulations.

The disconnect that is provided to meet the requirements of 430.102(A) can also serve as the disconnect for the motor if it is located within sight from and not at a distance greater than 15 m (50 ft) from the motor and equipment.

Disconnecting Means. This can include a switch, a circuit breaker, a cord and plug connection (sometimes), or a group of the aforementioned devices.

How to Calculate the Electrical Disconnect Switch Size

1. Examine the appliance manufacturer nameplate on the appliance. Determine the horsepower rating of the appliance.
2. Convert from volt-amps, watts or kilowatts to horsepower. Divide watts or volt-amps by 745.7 to obtain horsepower.
3. Select a disconnect switch with the same or greater horsepower rating as the appliance.

A properly sized disconnect switch for a single motor will:

1. Have an ampere rating greater than or equal to 115 percent of the rated motor full load current; or,
2. Have a HP rating greater than or equal to the rated motor HP (at applied voltage) if the disconnect switch under consideration is HP rated.

Start with the basics The most commonly seen disconnects come in staged amperage sizes of 30, 60, 100, 200 and 400 amps. There also are 600-, 800- and 1,200-amp sizes, but these are very large and are usually found on the power one-line diagram.

The GE 60 Amp 240-Volt Fused (requires 2 fuses installed on the back side of the puller). This Metallic AC Disconnect is designed to stop the flow of electricity to allow you to safely work on the air conditioner. The disconnect is housed in a steel enclosure that is resistant to rust and corrosion.

There’s nothing wrong with using a 60 amp disconnect on a 30 amp unit as long as the circuit itself is on the proper size breaker. 60 amp is a standard size for and a/c pullout type disconnect.

The goal of a fused disconnect is to open a circuit and disengage power quickly and definitively in the case of an overload or short. When potentially harmful electrical problems arise the fused disconnect detects them, the fuse blows, and the equipment is shut off automatically.

Check your owner’s manual for the location of your car’s fuse panel, as it may be under the hood, in the trunk, or even in the driver’s foot well area. A blown fuse can cause your AC to stop working.

Most units have one on them. It’s usually fairly small and red. If you can’t find it, consult your AC’s manual to see where the button is located. Unplug your unit from the wall for at least 15 seconds and plug it back in.

Here are the steps you need to take to reset your AC thermostat.

1. Shut Down Your AC at the Thermostat.
2. Find Your Circuit Breaker Box.
3. Reset the Circuit Breaker for Your AC Unit.
4. Wait 30 Seconds.
5. Turn the AC Thermostat Back On.
6. Call Vredevoogd Heating & Cooling for all your Furnace & AC needs.

If your AC unit won’t turn on, the first thing you should check is if there was a blown fuse or a tripped breaker. There’s a good chance that the problem is a tripped breaker if the circuit was overloaded. However, it is also possible that a power surge caused your air conditioner to blow a fuse or trip a breaker.

Here are the step-by-step reset instructions:

1. Turn your thermostat off by switching it to the off position.
2. Find the breaker that powers your HVAC system and turn it off.
3. Wait 30 seconds and turn the breaker back on.
4. Turn your thermostat back on.

A Reset Button That Stays Off To troubleshoot this, first, switch the thermostat to “OFF”, then take the batteries out and press the reset button again. Put the batteries back in, switch the mode to either the “HEAT” or “COOL” position, and turn the thermostat back on.

Look for and address simple reasons why the thermostat isn’t getting power, such as dead batteries or a tripped breaker or blown fuse in your main electrical service panel. If you’re certain it’s receiving power, shut off the thermostat breaker in order to safely take off the cover and examine the inner components.

Steps to reset the Honeywell Thermostat 8000 Series

1. Make sure the thermostat is set to “ON.”
2. Press the “SYSTEM” on the screen.
3. Hold down the centre blank button for 5 seconds.
4. Select “Reset to factory settings.”

Select the MENU option on the home screen of the thermostat. Once the RESET option is visible on the screen click on SELECT. Now, click on YES to reset the thermostat. If you select NO, you will go back to the main menu.

If the thermostat is still unresponsive, make sure the breaker is shut off and remove the cover. If it looks dirty inside, use canned air or a soft artist brush to clean away accumulated grime that may be affecting its functionality. Then look for issues like loose wiring or terminal screws and tighten them up.

Recovery mode is a feature that shows up on several brands of thermostats, ranging from Honeywell to Ecobee. During recovery mode, your thermostat is working toward achieving a newer temperature that is cooler or warmer than the outside air.

You can override recovery mode on a Honeywell thermostat by simply disabling it in the settings. If you don’t want to disable it entirely, you can program recovery mode to work on certain days. Even if you override recovery mode on your Honeywell thermostat, you can reactivate it at any time that you choose.

How to get out of Safe Mode or Android Recovery Mode

1. 1 Press the Power button and select Restart.
2. 2 Alternatively, press and hold the Volume Down and Side key at the same time for 7 seconds.
3. 1 Use the Volume Up or Volume Down button to highlight the option Reboot system now.
4. 2 Press the Power button to confirm the selection.

How to Override an Indoor Thermostat

1. Press the hold button to place a hold on the current programming.
2. Press and hold the temperature adjustment button.
3. Change the program.

By pressing “Hold”, your thermostat will lock in the temperature it’s currently at until you change it again. When you are ready for your normal schedule to resume, simply press the “Run” button and return to your typical programming.

Smart thermostat With a programmable smart thermostat you can control the settings from your Apple or Android smartphone. With a Wi-Fi enabled thermostat, you can take total control of your home’s temperature settings. Your thermostat isn’t the only appliance you can control from a smart home app.

Override is an automatic settings feature on your AC unit that allows you to shut off or turn on your unit for a short period of time. This will increase ventilation in your home when your AC unit is off. If your thermostat reads ‘override’, the unit will run or not run for that specified duration.