Hello, I maintain the electrical controls etc. on deep well pumps for drinking water. Each of these wells has a chlorinator with a 3 hp, 230 vac chlorine injection pump and a 1/3 hp, 120 vac chlorine tablet vibrator. To make motor change outs easier, we have been asked to wire receptacles into the control circuits so that the motors can be plugged in, instead of hard wiring them to the controls. Is this permitted by the NEC?? Thanks
Receptacles wired into control circuits
- Thread starter gideon
- Start date
- Status
Tom.Margillo
Member
Re: Receptacles wired into control circuits
Would the recepticals be for the 120v or 230v motors? Does the controls have any thing that protects the motors? If you put the recepticals after the control you should be OK.
Would the recepticals be for the 120v or 230v motors? Does the controls have any thing that protects the motors? If you put the recepticals after the control you should be OK.
lawelectric
Member
Re: Receptacles wired into control circuits
Kind of vague, but it sounds like you want to pre-fab your motors with cords and caps and then plug them in/out on change over. That is ok to do as long as your cord/caps are rated properly.
Explain further if this is not your question.
Are there submersible?
Kind of vague, but it sounds like you want to pre-fab your motors with cords and caps and then plug them in/out on change over. That is ok to do as long as your cord/caps are rated properly.
Explain further if this is not your question.
Are there submersible?
- Location
- Illinois
- Occupation
- retired electrician
Re: Receptacles wired into control circuits
I have installed a number of small metering pumps for water treatment systems where the PLC controlled the receptacle that the metering pump was plugged into.
Don
I have installed a number of small metering pumps for water treatment systems where the PLC controlled the receptacle that the metering pump was plugged into.
Don
- Location
- Bremerton, Washington
- Occupation
- Master Electrician
Re: Receptacles wired into control circuits
I just finishe up a similar installation, we have a small 1 ampere 120 V chemical metering pump for hypochlorate solution (bleach). The pump is plugged into a GFCI fed from a control panel.
I don't want a non gfci receptacle as someone could plug in a tool and get shocked. We will mark the in use cover clearly with a label.
Keep in mind if the chemical pump trips the GFCI then you have some leakage, at least 6 mA
Recently we installed a GFCI for small 1/4 hp water sample pump, it tripped the GFCI. Upon investigation, we found a dead short from the pump to ground, but it wouldn't trip a regular breaker.
I would only use GFCI for the 120V pump, not the 230, but for it use a pin and sleeve IEC 309 type.
I just finishe up a similar installation, we have a small 1 ampere 120 V chemical metering pump for hypochlorate solution (bleach). The pump is plugged into a GFCI fed from a control panel.
I don't want a non gfci receptacle as someone could plug in a tool and get shocked. We will mark the in use cover clearly with a label.
Keep in mind if the chemical pump trips the GFCI then you have some leakage, at least 6 mA
Recently we installed a GFCI for small 1/4 hp water sample pump, it tripped the GFCI. Upon investigation, we found a dead short from the pump to ground, but it wouldn't trip a regular breaker.
I would only use GFCI for the 120V pump, not the 230, but for it use a pin and sleeve IEC 309 type.
- Status