20 Most Recent Square D Ehb24020pl 20 A Ehb4 Ehb Circuit Breaker Questions & Answers

A 208 volt 24 volt coil relay is rated for use at 208 volts at the relay contacts. The coil used to energize or closed the relay contacts are operated o 24 volts .a 24 volt transformer is used for the coil circuit. Hope this helps. Bob

1. Why not buy a phase loss monitor that monitors all 3 legs. 208v 3ph is 115-120V to neutral. If you're using two 120V relays you'd only be monitoring 2 legs of the 3 phase. Using relays can be risky, as sometimes when you loose one phase you'll still pick up voltage through your load. If your set on using relays use 2-208V relays. Connect one to phase A+B and the other to B+A and then wire two of the normally open contacts in series and put that in your circuit with your pressure switch. I'f you're using 208V for control voltage, then you need to take L2 to the oveloads and then to the coil. L1 would go to your pressure switch, and the return from the pressure switch would go to the other side of your coil. You could add your phase loss protection here.

First switch off the power at the main breaker or pull the meter from the meter socket. If you flip off the main breaker and it is mounted in the same breaker panel, just be aware that the wires above the breaker are still hot. Connect the white wire to the neutral bar, the green wire to the ground bar, and the black wire to the breaker. Then tilt the breaker to get the front black lug under the bar and push the back of the breaker onto the lug on the bus bar.

I don't care what kind of stories Craftsman tells, their numbers don't add up.
One horsepower is ~ = 740 watts of energy.
2.5 hp equates to a steady-state power consumption of  ~1850W and this could be 50% higher during the first second or two after turn-on.  Your 15 Amp circuit is pushed to the limit by that power level; 15 Amps X 120 VAC = 1800W And, motors aren't a breakeven game; part of the power they draw is wasted in heat.

9 amps steady-state would be a power consumption of over 6kw which cannot be right. Either your measurements or the motor is faulty. 

i strongly recommend that you get in an electrician to investigate the problem from your description of the amount of power required from your circuit breaker I would consider that there are to power wires from the back of that unit one circuit to run half the points and another wire to run the rest If only 1/2 are working, I am thinking that one of the wires at the back of the breakers is loose or come undone/broken and that will require the services of an electrician To further explain this line of thought, each circuit in a house is designed to carry a maxim of 10 amp total (wire current capacity) so that with all outlets in operation the maximum current is 10 amps if the required current allowed exceeds that the electricians break the numbers up so that a second circuit is employed again up to 10 amps max if again there was a requirement that exceeded the 20 amps ( circuit breaker amp) a second circuit breaker would be installed and a 3rd circuit and so on

You can put 440 in conduit as long as it's insulation is rated accordingly @ 600 volt. Exposed conductors is another issue. Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/lisa_52daba487e5b4d53

Could be major safety issue. They trip when too much amperage cause them to heat up and trip the bimetal. Get an electrician now, please.

We need to know what you are connecting. IF you are putting in a 220 outlet for stove, dryer etc. Are you in a mobile home?

The size of the breaker that you are going to use on a circuit is predicated on the current draw of the appliance(s) you have on the circuit. Assume you have them all turned on, add up their respective amperages and , voila, you have a close approximation of the size of the breaker. If you do not know the amperage look for watts info. Divide the latter by voltage of 115 and you will arrive at the amps used.

whats the question? you can always take old box out and replace with a new box of any manufacturer--if that is your question

Make sure there aren't any loose contacts or shorts in the wiring or in any of your appliances. This could also be because of extremely high load. What all devices are hooked onto that line and run simultaneously?

I'm a licensed electrician with 24 years experience, and I Shut everything Off when I'm working, if the main is off the bus bars in the panel will be de energized making it safer to remove and install Keep in mine the power is still on at the main breaker terminals ! then the breakers install feet first then snap into the bus bars.... I Really hope this helps and Please Be CAREFULL

Then, call PG&E...or your local utility company to come out and check your meter. PG&E, or your local utility company are responsible for the power up to the meter at your electrical service panel. After that, it's the electrician's responsibility...

sounds like you lost the ground

As long as you have the capacity to run 100 amps from your 200 amp box and your wire size is adequate then yes.