im Pretty sure its Sturdy enough to survive you shaking the pole a little bit.

the Slipfitter is probably much tighter than you think it is...so its not likely to come off from the Pole being shaken.
and besides..that would be considered Destruction of Public Property and Vandelism.

I'm not sure how you could "juggle" a pole but I guess you meant shake, as Devonte said it would no doubt stay up there, as it has for the last 40 years or so, don't forget the wind shakes poles a lot, but the fixtures don't just fall off

Yep I've seen streetlights and traffic lights bounce a bit when it gets windy here.

I've seen the remains of an M-400 the fell when the pole rotted and the light was still on the slipfitter. Even after the whole pole fell! the bracket was bent up and the housing was cracked. I'm sure you guessed it was RPP amusement park. The pole was down for awhile in the corner of the grassy parking lot. If it's there when I return, I get pics. The ballast was rusted through so i didn't take it.

Only thing that makes a streetlight come falling off a pole is if a car hits it.

yeah and you cant generate that much force.

In a car you can.

Very Funny Ian.

Are you sure this is a M-400 not a M-250?

@Jace the Earliest M-250's that have M-400 Housings,250 Watt Lamps and Polycarbonate Refractors?

Yep but overtime refractors gets replaced and can get replaced with glass....and only those without the thumb latch like the above could be a M-250..

Ian said its a 400w so its a M400.

im sure it's a M400 but how could you tell the diffrence through the glass?

If it has the smaller 175w or 250w lamp inside, chances it may be a M250, especially if it is the oldest model in silver without the thumb latch.

Unfoutunatly, we won't know unless the light is opened up. It's not common for utilities to do this, but it may have a cram lamp.

There's no such a thng as a MV cram lamp from my knowlege....plus...its actually kinda easier than you think....you have to look carefully....the M-250 has LOOOONG socket inside....

Yes there is. I used to own one. It's only made by Plusrite.

Most likely a utlity wouldn't use a Plusrite anyway...its one of the worst quality lamps out there.... plus if it was 175 or 250 watt...it would be centered in the reflector because of longer socket....and yes you'll be able to see through glass....you need an experienced eye...like me! If it was a cram lamp MV....it would totally be off centered on the reflector

I kinda recall seeing a 175w mercury cram lamp before but I can't seem to find any info on it.

Alain has a 175 Watt MV Cram Lamp,its an ED-17 Envelope with a Medium Base i believe.