Grizzly switch wiring questions

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Forum topic by Vrtigo1 posted 11-02-2010 08:57 PM 1132 views 0 times favorited 5 replies Add to Favorites Watch
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434 posts in 3229 days

11-02-2010 08:57 PM

I recently ordered a Grizzly H8241 switch ( for my router table and it arrived yeseterday. I’m a bit confused about how to wire it in, though. There were no instructions in the box and they didn’t appear to have any online either.

On the back of the switch, there are four spade terminals, but I was only expecting to see two terminals like a standard household switch. I would only expect to see four terminals on a 220V switch or a double-pole switch? I searched the forum and found several people using this switch, but didn’t see any info regarding wiring it.

Does anyone have any insight they care to share? I intend to investigate it using a multimeter when I get home later today, but instructions or first-hand advice tend to give me that warm and fuzzy your-house-isnt-going-to-burn-down-while-you-sleep feeling.

5 replies so far

View lew's profile


12500 posts in 3993 days

#1 posted 11-02-2010 10:00 PM

THis may be a switch that “breaks” both the hot and neutral wires. So you would have white and black “in” and white and black “out. Not sure without a little more research.

-- Lew- Time traveler. Purveyor of the Universe's finest custom rolling pins.

View hairy's profile


2783 posts in 3770 days

#2 posted 11-02-2010 10:54 PM

Lew is right. I went through that same ordeal. I’ve never before seen a switch that breaks hot and neutral, until I met that one.

-- My reality check bounced...

View TheDane's profile


5575 posts in 3901 days

#3 posted 11-02-2010 11:01 PM

I have a one of these … lew and hairy have it right.

You don’t have to wire both the hot and neutral, but it is not a bad idea.

-- Gerry -- "I don't plan to ever really grow up ... I'm just going to learn how to act in public!"

View Vrtigo1's profile


434 posts in 3229 days

#4 posted 11-02-2010 11:08 PM

Perfect, thanks guys. That’s what I figured, but wanted to make sure.

View Vrtigo1's profile


434 posts in 3229 days

#5 posted 11-04-2010 10:12 PM

I hooked the switch up last night and switched both the hot and the neutral wires. Basically what I did is got a 25’ 12 gauge extension cord, cut the outlet end off and wired that in to the switch on the in side, then wired a regular duplex receptacle to the out side of the switch. It works fine, but I noticed that the green ‘on’ part of the switch vibrates when it is energized. I’ve never seen a switch vibrate before, any ideas why it’s doing this?

I thought that it might be one of those fancy magnetic switches, so I turned it on and unplugged it from the wall while the router was running. Then I plugged it back in to the wall and the router did not turn back on, so it appears that it’s one of those safety switches. Not sure if this is relevant.

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