We have been asked to promote on the web a european company which
manufactures electric fencing and other security systems.Although the
company does not currently sell into the USA we expect to get
enquiries from the States.Initial research shows electric fencing
tends to be limited to farming or controlling domestic animals.This
then begs the question is the use of electric fencing ( for security
issues) regulated in the states with high exposure to litigation.
Ideally the answer would direct us to further literature we could then follow up

In the United States the laws and regulations regarding Electric
fences comes down to the level of county and city permits. Mostly they
are used for the containment of animals, or the prison system. Very
few other uses were found, even for security areas, such as military
bases and the like. No doubt they are used in other areas, they are
just not prevalent there.

Most of the electric fence references I found for the United States
are also fences designed to be non-lethal or "less-than-lethal".

In City areas, most of the time Electric Fences of any type are simply
illegal. Some typical exceptions would be Zoos or "bear zones". They
simply cannot be put up, with or without a permit. In county and rural
areas, these change to fences to control wild life. However, it is
stated in the statute that the fence is for "controlling wildlife or
stock animals" not for security. Many times the statute specifies the
number of electric strands that can be used in the fence (most are
between one and three).

Electric fences in the city are primarily the "collar on dog" type,
where the fence is really not a fence at all, but a wire buried in the
ground, and the collar on the dog gives it a shock when the pet comes
to close to the "fenced off" area.
http://www.servicemagic.com/article.show.16.Electric-Fence.9118.html

This company constructs (or sells) electric "non-lethal" fences
designed to be inside another fence (if I'm reading that correctly) so
that the electric fence is on private property, the casual "passer by"
would not accidentally bump into it, and even if they did, they
probably wouldn't die.
http://www.electricguarddog.com/products.html

Here are some example statutes, which may show some light on your
previous findings.

St. Paul MN 
Sec. 33.07
" (f) Electric fences. No aboveground electric fence shall be
constructed within the city limits of the City of Saint Paul, except
at Como Zoo for the containment of zoo animals."
http://www.stpaul.gov/code/lc033.html

North Liberty Iowa
1605.9 Fence Material 
2.  Electric fences. It shall be unlawful for any person to erect
construct, keep or maintain any electric fence in any zoning district
within the city, except for the enclosure of livestock operations
located in an Interim Development district, provided the property on
which the livestock operation is located does not adjoin property that
is zoned or used for any residential purposes.
http://www.northlibertyiowa.org/city/code/1605-7.htm

Seattle Washington
SMC 15.48.020  Barbed wire or electric fence.

 It is unlawful to place, or maintain, or allow to be placed, or
maintained, any barbed wire or electric fence abutting upon the
marginal line of any public place in a manner that may be hazardous to
a pedestrian in the public place.

(Ord. 117569 Section 122, 1995; Ord. 90047 Section 40, 1961.)
http://clerk.ci.seattle.wa.us/~scripts/nph-brs.exe?s1=15.48.020&s2=&S3=&Sect4=AND&l=20&Sect1=IMAGE&Sect3=PLURON&Sect5=CODE1&d=CODE&p=1&u=/~public/code1.htm&r=1&Sect6=HITOFF&f=G
---other Washington sites---
http://www.mrsc.org/subjects/planning/fences.aspx#Electric

If you need further research done on this question, please feel free
to use the Clarification Request function

thanks,

webadept-ga

Excellent answer, provided a rounded view with cross references which
we can use for further access if required.Well worth the fee.